MeterEye:基于NB-IoT和图像处理的普适远程抄表系统  

Meter Eye:a General Remote Meter Reading System Based on NB-IoT and Image Processing

作　　者：王杜毅 常相茂[1] WANG Du-yi;CHANG Xiang-mao(College of Computer Science and Technology,Nanjing University of Aeronautics and Astronautics,Nanjing 211106,China)

机构地区：[1]南京航空航天大学计算机科学与技术学院,南京211106

出　　处：《小型微型计算机系统》2021年第9期1950-1954,共5页Journal of Chinese Computer Systems

基　　金：国家自然科学基金项目(61672282)资助。

摘　　要：窄带物联网(NB-IoT)技术的出现为现有抄表系统存在的抄表难、管理难等问题提供了一种有效的解决方案.但是,现有的NB-IoT远程抄表系统仍然存在着诸多不足,例如较高的功耗、高昂的安装成本和单一的应用范围,这大大限制了其应用的推广.本文提出了一种基于NB-IoT和图像处理的普适远程抄表系统Meter Eye.Meter Eye通过读取表盘图片避免了对原有表的改装,只传输包含读数信息的图像变化量,并利用压缩感知技术大幅度压缩图像体积来降低传输功耗.本文对指针式和字轮式表头的传输图像都进行了图像重建质量分析,并采用基于卷积神经网络(CNN)的数字识别系统的准确率作为衡量图像重建质量的标准.实验表明,当压缩率大于7%时,图像数字利用CNN的识别准确率高于94.09%,降低传输功耗可达到15.99%.The emergency of Narrow Band Internet of Things(NB-IoT)provides an effective solution to the problems of difficulties of meter reading and management in existing meter-reading systems.However Jthe existing NB-IoT-based meter reading systems usually have high power consumption Jhigh installation cost and limited application scenarios,which obstruct their popularization.In this paper,we propose MeterEye,a general remote meter-reading system based on NB-IoT and image processing.MeterEye avoids the modification of the original weter by reading the dial picture,and only transmits the amount of image change containing the critical information which is greatly compressed by compressive sensing to reduce the transmission power consumption.In this paper,the quality of image reconstruction is analyzed for both the pointer and wheel meters,and the accuracy of the digital recognition system based on Convolutional Neural Network(CNN)is used as the standard for measuring the quality of image reconstruction.Experiments show that when the compression rate is larger than 7%Jthe digital recognition accuracy of image by CNN is higher than 94.09%,and the transmission power consumption can be reduced to 15.99%.

关 键 词：窄带物联网(NB-IoT) 远程抄表系统 压缩感知 低功耗 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]